# requested_topping = "mushrooms"

# if requested_topping != "anchovies":
#     print("Hold the anchovies!")
# # anchovies: 意式小银鱼

#######################################################

# requested_toppings = ["mushrooms", "extra cheese"]

# if "mushrooms" in requested_toppings:
#     print("Adding mushrooms.")
# if "pepperoni" in requested_toppings:
#     print("Adding pepperoni.")
# if "extra cheese" in requested_toppings:
#     print("Adding extra cheese.")

# print("\nFinished making your pizza!")

#######################################################

# requested_toppings = ["mushrooms", "green peppers", "extra cheese"]

# for requested_topping in requested_toppings:
#     if requested_topping == "green peppers":
#         print("Sorry, we are out of green peppers right now.")
#     else:
#         print(f"Adding {requested_topping}.")

# print("\fFinished making your pizza!")

#######################################################

# requested_toppings = []

# if requested_toppings:
#     for requested_topping in requested_toppings:
#         print(f"Adding {requested_topping}.")
#     print("Finished making your pizza!")
# else:
#     print("Are you sure you want a plain pizza?")

#######################################################

available_toppings = ['mushrooms', 'olives', 'green peppers', 'pepperoni',
                        'pineapple', 'extra cheese']
requested_toppings = ['mushrooms', 'french fries', 'extra cheese']

for requested_topping in requested_toppings:
    if requested_topping in available_toppings:
        print(f"Adding {requested_topping}.")
    else:
        print(f"Sorry, we don't have {requested_topping}.")

print("\nFinished making your pizza!")